Attachment for harrows



Sept- 12, 1950 A. E. YOUNG 2,522,011

4ATTACHMENT FOR HARROWS Filed April 9, 1947 v 2 Sheetsv-Sheet 1 Sept. l2, 1950 A. E. YoUN ATTACHMENT FoR HAiRow's' 2 Sheets-Sheet 2 Filed April 9. 1947 Patented Sept. 12, 1950 off sfrArEsz e orf-FlicEi;l s

ATTACHMENT FOR-JHARROWS.

AustinE. Young; Syracusaf N." Yi; assi'gnorto 1 SyracuseChilldfPlw106., Inc., SyracusaJNlYg' a'fcorpo'ratitineofNe'w Yorke:

,i ,Application April'9,v1947, Serial No, 7 40,451

The present invention'relates generally to farm" implements of the tractordrawnl type' and more particularly 'togr'ounj' Working tools; such'` as spring "tooth^harrows and 'the like;`

.The fobject"and-"general 'nature of `the `present invention is the*provision*ofianl implement of* this type in which means is provided-Tor smoothingout the ridgesift bythe harrow teeth.' More patifcularlyyit isa `feature of l'this 'invention' to provide "aharrow ofthe lspring tooth type "have ing asmoothingfattachment 'which 'smooths the ground'rearwardly of the'h'arrow'teeth but does notinterfere xwith they backing of the narrowr` of this. invention to provide a smoothingattachmentfforabarrow or the like in whichv provisionn y is made for backing the harrow without damage to the attachment.'` Thisis particularly import-- ant Where the attachment is usediwith tractor. controlled `narrows, such as, forexample, aliarrowN ofthetype shown in U. S.P`atent2,354-,850,

issuedlAugust 1,1944, to Curtiss LI .Cooklandf Austinirltifo'ung.`

Tliese anni other/objects and advantages of- :the-

presentvinvention .willbe apparenttothoseskilledc inltherart `,after a consideration of -thefollow-ing'. detailedfdesoriptiomtaken inconjunction.withs` the accompanying drawings,-in vwhich Figurefl is..-aplan;view of.a smoothingfattache ment constructed` accordingtofthef principles sof. the-present finvention, ,showing the same: as at tachedA to af spring4 tooth harrow;

Figure 2=isfa side'vvieW--of the implement shown Figure 3 fa-.'yiewr sirnilarstoy Figur-ef 2, showingt' the". harrowtA infits transport`Y position# and the;1

smoothingi attachment .in tsfzraised 4orstransport' position.

Fi`guref4 is-an'zenlarged' sectionalfviewiY taken along the'line 'll-"-llloffifFigure Refriinglfn'ow -nioreparticularlyfv to llFi'gures. 1* and I2, the'. smoothing# attachment-'lwhich ,come prisesifthe -prinoiparafatureeofthe 'present'ina vention",-` -is .indicated "nnitsventirety byu-the "referia" encecnumeral" l fand s" shbwnzas 'attached-:to all springf-toothlharrow-'shownufragmentarilylfattZgi55,in-itheeform otrarrangles.. Aff. pair;- off. arms 35,11

the*narrowf-:preferablyr'being'j of the sam'e-"con' structionas that shown, by Way of example;- inl tol whicnreference may` 'be= madel if necessary? *i Briefly; the barrow `2 'includes-amain framajinclicated in* its entirety" by the reference"numeral 31" comprising fore and' aft extendingrunner bars -1I each of which" is"provided -with a' plurality `of v Y brackets "5 aperturedito receivepivots 6 "whicli" I serve to 'connect 'h'arrow tooth"'b`ar structures "l to the "frame bars' Lor vlrunners 43' Each' tooth' bar structure I comprises a'transverse channel mem-i bers each having? at ts'ends angl'clips 'I I welded or otherwise'.secured'thereta the outerorllower" enols' "of-the angleclips being apertured toreceivev the pivots" g'whi'cht'may be in 'thelformofboltsor'4 the like.' By virtue offthe"constructiorr'justde scribed,' eachi'of thetransv'erse 'tooth tbars 9"is' 20 ,Y mounted for swinging movement. .inthe rameS,

and tlfeseveraltooth bars, .only two vof which' are shown in the drawings, are connected. toswing' togetherbymeans of'an arm: IZ'IXedto each.

tooth :bar-9"andjone or morexconnectin'glinks I3"" which'4 extend,longitudinallyl and which .are pvotedas atfl4, to the outer end'of eacliof'theA arms,A I2.V

` Each ofthe harrow tooth' bars 9 carries a plurali'typf' 'ground 'working springteeth Iof 'gene erallyA, conventional constructi'on, each tooth' I8" including Va.forward. end I 9.;lthat isconnected "byg-l a positivelocktooth clamp, 2I1Ito the associated" toothfbar. 9L Preferably7 `each clamp 2l! includes a ueshaped clamping V,member 3 l having apertureszto receive .the tooth section I9," the aper- 'l tures boing in itheesideqportions: of. each toothy clamp-:which Yembraces the .channel bar'f TheY central portion:V of eacht U,-shapedA clamping2 mama ber :3l s carries -ae nut member- 34 .welded vtothe* 4 c1amping=membeni and a set sorewf 5 is .threaclefctintoithe-nut member mand when tighteneclbears againstrthe webfot! the channel iiiyandv serves. tow force theend-:IQmthe spring-.tootlfrv member. I8; upA against the Tedgesfofwthe#flangesot ithei tooth. clamping' the# tooth I 8 Turning lnow to thefssmooth-ingfattachment I; whiohfcomprisesftheprincipali portion. of thepres ent invention; incombinationwith the fharrowv- 50a 2,i th'essmoothing attachment i1I :comprises la qpluta rality of smoothing :teethv 4I each-1b'eingthreadedi ati-itsseupper'fend: to :receive an pair'off f lock nuts 42.! whicho. imly f annal rigidly-1 clamp Ieach' toot/hf y tofxon'eirflangeefoa' transverse-bar 43, .preieralolyi4 preferably in the form of angle clips, are secured to the tooth bar 43 in any suitable manner, preferably, however, by means of one of the lock nuts 42, and the upper end of each of the arms 45 is apertured to receive a pivot bolt 41. The bar 43 is adapted to be connected to the rear portion of the harrow 2 by a pair of fore and aft extending connecting bars 49. At itsrear end,.each of the bars is apertured to receive the pivot bolt 41, and each bar 49 includes a rearwardly extending section 49a which overlies the angle bar 43. As best shown in Figures 1 and 2, the length of the arms 45 is such that in operation the teeth 4I swing rearwardly until they angle 43 comes up against the lower edges of the rear sections 49a of the connecting bars 49, thus defining the operating position of the teeth 4I.

The front ends of the connecting bars 49 are pivotally connected to the rear tooth bar 9.0i f the narrow I. Preferably, this is accomplished by a pair of arms 52 which are clamped to the harrow tooth bar 9 by clamping members 20 which are the same construction as the clamps that secure the spring teeth I8 to the tooth bars 9 of the harrow. Each bracket or arm 52 thus includes a lower section 53 which receives ,the associated clamp 2D and an upper angled section 54 which is bent, `as at 55, to form a pivot receiving section. Theforward ends of the connecting :bars k49 are turned backwardly so as to provide, in effect, two attaching portions which are apertured, as at 51, to receive a, pivot pin 58 that pivotally connects the fro-nt end of the associated connecting bar 49 to the associated arm 52. It will be noted from Figure 1 that this type of pivotal connection disposes the main body of each connecting bar 49 to one side of the clamping unit 2D, the purpose of which will appear later.

In operation, the parts are arranged as shown in full lines in Figure 2, the harrow 2 and its smoothing attachment being propelled preferably by a farm tractor (not shown), the working portions of the teeth I8 penetrating the ground and loosening the soil, splitting the clods, pulverizing and aerating the ground. Generally, however, the passing of the teeth I8 through the ground tends to leave the soil ridged, and the purpose of the smoothing attachment I is to further stir the soil, particularly the upper portions thereof so as to leave the soil level in an excellent condition to receive seed. The smoothing unit I, being pivoted at points 5B with the rear portion of the harrow 2, smooths the ground by virtue of its own weight, the same being floatingly connected with the harrow 2 and hence operates indep'end- 5 ently of inequalities in the ground surface that might otherwise raise or lower the smoothing teeth 4I if the same were rigidly attached vwith the frame of the harrow 2. If it should be desirable to back the outfit at any time, the smoothing unit 4I, 43 accommodates this by merely swinging forwardly into the position shown in dotted lines in Figure 2. If, for example, the teeth 4I were not thus pivoted to the connecting bars or other framework, the outt could not readily be backed since the smoothing teeth would dig into the ground. Generally, the forward and upward swinging of the teeth 4I is limited by virtue of contact of the forward flange of the angle 43 with the lower edges of the connecting bars 49 just forward of the pivots 41.

The smoothing attachment I is automatically raised into a transport position whenever the spring teeth I8 of the harrow 2 are raised into their transport position. This may be accom- 4 plished as, for example, in the manner set forth in the above identified Cook et al. patent which, as there disclosed in detail, includes means for swinging the tooth bars 9 forwardly by virtue of a forward thrust being imparted to the link or links I3 which acts through the arms I2 to swing the tooth bars 9 in a oounterclockwise directionL (Figures 2 and 3). Since the arms 52,- are disposed in a generally upward direction, which places the pivots 58 in such a position that when the harrow tooth bars 98 are rocked in a counterclockwise direction, as best shown in Figure 2, the points 58 are swung forwardly and downwardly which brings the forward ends of the connecting members 49 down against therear edges of the caps 3I on the tooth bar 9, contact being `established at the points P (Figures 2 and 3), the caps 3l thus serving as parts of the rear tooth bar- 9 whereupon further rocking movement thereof acts to swing the connecting bars 49 bodily upwardly and forwardly, raising the smoothing unit I into a transport position. As best shown in Figure 2, the unit teeth 4I hang in a generally vertical position, with the angle 43 up against the lower portions of the connecting bars 49 to limit unnecessary swinging of the unit I during transport. l

While I have shown and described above the preferred structure in which the principles 4of the present invention have been incorporated, it is to be understood that my invention is not to be limited to the particulardetails, shown and described above, but that, in fact, widely different means may be employed in the practice of the broader aspects of my invention.

What I claim, therefore, and desire to secure by Letters Patent is:

l. The combination with a harrow including a rockable tooth bar and means for rockingsaid bar, of a smoothing attachment comprising a toothed unit having forwardly extending bars, and means pivotally connecting the forward portions of said bars to said tooth bar at a point spaced from the axis of 'rocking movement of said tooth bar, said forwardly extending bars having portions engageable with said tooth bar when the latter is rocked whereby when said tooth bar Yis rocked said smoothing attachment is swung upwardly.

2. The combination with a harrow including a rockable tooth bar and means for rocking said bar, of a smoothing attachment ycomprising a toothed unit having forwardly extending connecting members, arms carried by said tooth bar in an upwardly and forwardly extending direction, and means pivotally connecting the forward portions of said connecting members to the upper and forward ends of said arms, so that said connecting members overlie said tooth bar whereby rocking of said tooth bar in a direction to carry said arms generally downwardly acts through said arms to bring the forward portions of said connecting members down into engagement with said tooth bar whereby further rocking of said tooth bar serves to swing said vconnecting members upwardly and raise said smoothing attachment into an inoperative position.

3. The combination with a harrow including a rockable tooth bar and means for rocking said bar, of a smoothing attachment comprising a toothed yunit having forwardly extending bars, generally upwardly extending-arms carried by said tooth bar, and means pivotally connecting the forward portions of saidbars to the upper ends of said arms whereby as said tooth bar isy v rocked forwardly to shift the teeth thereof into a transport position said tooth bar contacts said arms and swings the latter upwardly and forwardly and raises said toothed unit into its transport position.

4. In an agricultural implement, a smoothing attachment for a ground working machine or the like having a rockable transverse member, said attachment comprising a plurality of ground engaging teeth, a transverse bar to which said teeth are iixed, a pair of connecting bars pivotally connected at their rear ends to said tooth bar, a pair of arms adapted to be xed to said rockable transverse member, and means pivotally connecting the forward ends of said connecting bars to said arms in such a position that when said transverse member is rocked, the resulting movement of said arms causes said connecting members to bear against said transverse member and to be rocked bodily therewith, thereby elevating said teeth.

5. In an agricultural implement, a smoothing attachment for a ground working machine or the like having a rockable transverse member, said attachment comprising a toothed ground engaging unit and rigid forwardly extending means, arm means adapted to be iixed to the underside of said rockable transverse member and extending upwardly and forwardly therefrom and means pivotally connecting the forward portion of said 30 is iixed to said transverse member, is adapted to bring said member into contact with said rigid connecting means and acts therethrough to swing said ground engaging unit bodily upwardly. 6. For use with a harrow including a rockable tooth bar and means for rocking said bar, the improvement which includes a smoothing attachment comprising a toothed unit having forwardly extending bars, arm means adapted to be xed to said tooth bar in rigid relation, and means pivotally connecting the forward portions of said bars to said arm means at points spaced from the axis of rocking movement of said tooth bar, said forwardly extending bars having portions engageable with said tooth bar when the latter is rocked whereby when said tooth bar is rocked said smoothing attachment is swung upwardly.

AUSTIN El. YOUNG.

REFERENCES CITED The following references are of record in the file of this patent: l

UNITED STATES PATENTS Number Name Date 329,606 Wherry Nov. 3, 1885 421,726 Kern Feb. 18, 1890 FOREIGN PATENTS Number Country Date 80,294 Sweden Mar. 1, 1934 344,179 Germany Nov. 15, 1921 345,412 Germany Dec. 9, 1921 

